Regulating mechanism for mixed-pressure engines.



0. BANNER.

REGULATING MECHANISM FOR MIXED PRESSURE ENGINES.

APPLICATION FILED JAN. 14, 1914. 1, 105,952, Patented Aug. 4, 1914.

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0. BANNER.

REGULATING MECHANISM FOR MIXED msssnm: ENGINES.

APPLICATION TILED 14111.14, 1014. 1,105,952. Patented Aug. 4., 1914.

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UNITED STATES v PATENT onrron.

OTTO BANNER, OF EAS'ION, PENNSYLVANIA, ASSIGNOR TO INGERSOLL-RAND COMPANY, OF JERSEY CITY, NEW JERSEY, :AQQORPORATION OFJNEW JERSEY;

REGULATING MECHANISM FOR. MIXED- PRESSURE ENGINES.

Specification of Letters iatent.

Application filed January 14,

1914. 1 Serial No. 811,989. r

To all cvhom it may concern:

Be 1t known that I, O'r'ro BANNER, a subject of theGerman Emperor, residing at Easton, in the county of Northampton and; State of Pennsylvania, have invented a certain new and useful Improvement in Regu lating Mechanism for Mixed-Pressure Engincs, of which the following; is a specifie 1 3 levers 26 and 27 and link28, operatesa low cation.

This invention relates to regulating mech anism for nnxed pressure engines and more particularly to that type of governor wherein the total amount of steam admitted is controlled by the load .on the engine and the proportion of the high andlow pressure steam. is controlled by the pressure of one of the steamsupplies.

The object of this invention is to pro vide a regulating mechanism of this type which will act positively and powerfully and at the w same time will be sensitive to trolling motor and its pilot valve.

The regulator, is shown in connection with f a turbine having a casing 1 and a shaft from 'which a governor 13, conventionally shown, is driven by means of .a gear wheel 4- and worm 5. To the movable sleeve oi. the governor is attached a rod 6 which is pivotally connected to one arm of a .bell

crank lever 7 which has a stationary ful crum 8. ver 17 is pivotallyattached a link 9,to the To theother armof bellcrank le upper end of which is pivoted one end of a controlling lever 10. The other end of the controlling lever 10 is attached toa rod 11 which ,is secured to a piston12 sliding in a cylinder 13, this cylinder and piston serving as a :total steam supply controlling motor. Hydraulic pressure is admitted to eitheiwside of the piston 12 through pipes 14-. and 115 by the movement. by the valve stem 16 of the pilot valve 17, this arrangement of motor and pilot valve being well Pivotally secured near.

known in the art.

its center on: rod .11 is a steam proportioning lever 18, to one end of which is secured, by means of a link 19, an arm 20 the other end of whichis secured to a high pressure cam sleeve 21 which rotates on a shaft 22secured tothe valve casing. and is provided with a cam 23. To the other end of the lever 18, by means of a link 24, is secured an arm which,.by means of pressure cam shaft 29 on which is secured a cam 30... Coacting with these cams 23.

and 30 are rollers 31 and 32which, through the agency of levers 33 and 34,.pilot valves PatentedAugA,19114.

and 36 and motors:37 and .38, serve to operate the high and low pressure valve 39 and 40, respectively, of the turbine. The construction and operation of these Valve operating motors 37 and 38 and their pilot valves are the same as the total steamsupply controlling motor previously described so that further detail is unnecessary. As the engineshown is intended to be operated with live steam only when the exhaust steam the arm 20 depressed and the cam 23 in a positionso that valve 39 will be closed. It

will be evident therefore that under ordinary condltions movement of thegovernor 3 and hence of the lever. 18 will be :com-

is not sufficient, there is attached to the arm i municated only to the low pressure valve,

spring 44 holding the arm 20 and hence the.

connecting end of the lever stationary. This will occur only when the low pressure steam is sufficient to operate the engine. When the low pressure steam: is insufficient another. mechanism comes into OPQI'MIIOII. To the.

upper side of a piston45 which slides in a cylinder 46 a pipe 47 leads to the low pressure steam main. A. spring 48 tends to move the piston 45 upwardly when the pressure of;the low pressure steam falls off; The piston 45 is attached to a rod 49 which by means of a lever 50, pilot valve.

51 and motor 52, such as alreadydescribed, communicates an opposite .motionto a rod 53. To the rod 53 is attached an arm 5 L secured to. a sleeve 55which' .is journaled onthe shaft 22 concentrically with a sleeve 56secured to thearm 25. The sleeve 55 has a longitudinally projecting lug 57 which lever.18. Ifthelow pressure steam is suffi is adapted to engage a similar lug 58 onthe sleeve 56 when the arm 54 has been; moved a certain distance downwardly.

In operation,'-when the speed of the an gine decreases the-rod 6 willbe moved outwardly-lowering the nearer endof lever 10 and hence raising the rod 11 and with it the cient theonly effect this moveinent will have will be to raise the arm '25 through the link 24 and rotate the cam shaft 29 to the left lowering the lever :34:- and opening the low 1 pressure. valve 40 to a greater'extentr If, however, the low-pressure steam is. not sufficient the position of piston 45!..and hence. lug 57will be such that the arm 25 can' have no further upward movement. In such a casethe movement of the lever 18 will be communicated to the arm 20 and overcoming the spring ,44; will rotate cam 23 to the left opening the high pressure steam valve. Furthermore, if the load on the engine should remain constant-and the amount of low pressuresteam and hence its'pressure decrease amoveir ent of the rod 49 upwardly would take place accompanied by a corre: P 'sponding downward movement of the area 5 L As soon as the lug 57 comes into con tact with the .lug 58, the arm '25 wouldbe moved downwardly shutting ofi the. low

pressure valve; to a corresponding extent and as 'the'rod 111 would remain stationary this downward. movement of the arm 25.

would produce an upward movement of the arm 20 openingthe high pressure valve.

It is to be 5 understoodflthat the present showingand description discloses only one specified ,modificatio'nvof my invention and other forms and modifications are included in the spirit and scope of the invention as expressed in the claims.

Whatl claim is: I 1. In a regulator pressure" steam valve, motors 'for'moving said valves, cams for governing the action of said motors, cam shafts for said cams, .an element movable in accordance with the load of the engine, .a lever pivoted on-said 50' element,xa connection between one end of said lever-and said high pressure cam shaft,

Copies of this patent niay b'e obtained for 7 for mixed pressure en-. ines 1a hi h ressure steam valve .a low;

.my hand;

a connection betweenthe other end of said lever and said low pressure cam shaft, a

second element movable in accordance with the pressure o f'the low pressuresteam, a connection between said second'nzovable element and said low pressure ,cam shaft arranged to engage said camshaft and turn it .to close said low pressure valve when the low pressure steam falls off, and resilient meansten'ding to holdsaid high pressure cam shaft in a position to close its valve.

2. In a regulator for mixed pressure engines, a high pressure steam valve, a low pressure steam valve, a cam shaft for operatingsaid low pressure valve, an element movable in .accordancewith the low presi sure steam pressureban arm connected to said movable element, a sleeve onsaid arm' ournaled ad acent to said cam shaft, a lug on said sleeve for engaging and turning said .cain shaft to close the low pressure valve when the low pressure steam falls off,

and means to cause the closing ofsaid low pressure valve to open said high pressure valve. I

3.- In a regulator for mixed pressure en-y.

gines, a high pressure steam valve, a low pressure steam valve, cam, shafts for operat ngsa d valves, an element movable acpivot ed on said element, anv arm for moving i said high pressure cam shaft attached to one end of-said lever,'anarm for moving said low pressure camshaft attached tojthe other end of said lever, resilient means te'nd-. ing to keepsaid highpressure cam shaftin a position to close its valve, a second movable element mov ng in accordance with the pressure of the low pressure steam, and an arm attached to said .secondmovable ele-f :ment having a connection with said low pressure, cam shaft adapted to move it to close its valve when the low pressure steam falls 0112, said motion beingtransmitted to said lever to opensaid high pressure valve.

Intestimony whereof, Ihave hereunto set fl;

. .OTTO BANNER. Witnesses:

PAUL HOFF AN, FLOY U. Pinon.

five cents each, by addressing the Commissioner of Paten ts. Washington D. C.

so cording to the load of the engine, a lever 

